<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .myDiv{
            width: 100px;
            height: 100px;
            background-color: red;
        }
    </style>
</head>
<body>
    <div id="app">
        <!-- <input type="button" value="点我" v-on:click="dianji()"/> -->
        <input type="button" value="点我" @click="dianji()"/>
        <div class="myDiv" v-show="isShow">

        </div>
    </div>
</body>
</html>
<script src="js/vue.min.js"></script>
<script>
    var app=new Vue({
        el:"#app",
        data:{
            isShow:true
        },
        methods:{
            dianji:function(){
                this.isShow=!this.isShow;
            }
        }
    });

</script>